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12 pages in this section.
Quick reference for JSX syntax, expressions, conditionals, fragments, styles, and composing elements in React 19 with TypeScript.
Quick reference for function components, props patterns, children, callbacks, slots, and composition in React 19 with TypeScript.
Quick reference for useState patterns: lazy init, functional updates, objects and arrays, resets, and common state modeling choices in React 19.
Quick reference for useEffect dependencies, cleanup, fetching, listeners, and when not to use effects in React 19.
Quick reference for useRef, callback refs, focus and measure, forwardRef, useImperativeHandle, and safe imperative DOM access in React 19.
Quick reference for React context, providers, custom context hooks, compound components, and composition patterns that avoid prop drilling.
Quick reference for rendering lists, choosing keys, empty states, nested maps, and conditional UI branches in React.
Quick reference for controlled and uncontrolled inputs, form submit, validation UI, file inputs, and accessible labels in React.
Quick reference for building custom hooks: toggle, storage, media queries, debounce, fetch skeletons, composition rules, and API design.
Quick reference for React.memo, useMemo, useCallback, lazy/Suspense, startTransition, useDeferredValue, and practical re-render control.
Quick reference for React 19 features: useActionState, useFormStatus, useOptimistic, use(), ref as prop, document metadata, and actions.
Quick reference for typing React props, events, refs, context, generics, and common utility types without React.FC.